A Complete Guide on How to Control Pavement Ants

Have you ever noticed tiny piles of soil next to pavements, sidewalks, or buildings? These are likely the work of pavement ants, a common pest in the US. Originally from Europe, pavement ants have successfully colonized much of the country, causing problems both outdoors and indoors.

In this comprehensive guide, we will delve into the world of pavement ants, covering everything from identification to control methods. By the end of this article, you will have the knowledge to tackle pavement ant infestations effectively.

Understanding Pavement Ants

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Pavement ants, scientifically known as Tetramorium caespitum, are dark brown to black ants about 1/8 inch long. They are frequently mistaken for odorous house ants, which are also common in the US. However, pavement ants can be distinguished by their two nodes in front of the abdomen, fine grooves on the head and thorax, a cluster of hairs on the end of the abdomen, and two spines on their backs.

These pests are most active at night and are often found foraging for food in kitchens or around pet bowls. When crushed, pavement ants emit an acidic smell, unlike odorous house ants that smell like rotten coconuts.

Distribution and Biology

Introduced to the US in the 1700s and 1800s via ships from Europe, pavement ants have successfully spread across the country. They are commonly found from New England to the Mid-Atlantic, and even in parts of the Midwest, southern states, California, and Washington.

Pavement ants build their colonies under pavements, in lawns, gravel pathways, and within buildings. These colonies have multiple queens and workers that swarms to establish new colonies. Their diet consists of fruit, nectar, honeydew from aphids, dead insects, seeds, and even human and pet food.

If pavement ants invade your home, they tend to nest under floors, in wall insulation, under carpets, and in moist areas like sinks or toilets. The presence of sand or soil mounds near cracks in floorboards or walls is a common indicator of an indoor infestation.

Control Methods

Insecticidal baits are the most effective way to control pavement ant infestations. Unlike sprays that only kill visible workers, baits are carried back to the nest to eliminate the colony by targeting the queen.

When using ant bait, it is crucial to choose slow-acting, non-repellent insecticides for optimal results. Boric acid, fipronil, and hydramethylnon are commonly used insecticides that can be used as part of bait traps. Remember to place baits near colonies or trails to attract the ants.

Choosing the Right Ant Baits

Sugar Baits: Terro brand liquid bait stations are convenient for indoor use, while gel baits can be applied in cracks and crevices.
Terro Liquid Ant Bait Stations: Ideal for indoor placement along baseboards, kitchen counters, and windowsills.
Terro Outdoor Liquid Ant Baits: Suitable for outdoor use and can be placed near ant trails for effective control.
Protein Baits: Combat ant killing gel or liquid bait stations containing fipronil are effective for protein-based ant baiting.
Combat Ant Killing Gel: Comes in syringe applicators for easy application in cracks and crevices.
Combat Max Ant Killing Bait Stations: Child-resistant bait stations suitable for indoor and outdoor use.

Patience is key when using ant baits, as it can take up to two weeks to fully control an infestation. Always follow the instructions on the product label and exercise caution when handling pesticides.

Conclusion

Pavement ants may be a common nuisance, but with the right knowledge and control methods, you can effectively manage infestations. By identifying these pests, understanding their behavior, and deploying appropriate control measures, you can keep your home free from pavement ant invasions.

Have you successfully dealt with a pavement ant infestation? Share your experiences and tips in the comments below! And remember, a proactive approach to pest control can help you keep your living spaces pest-free and comfortable.